Antiskidding device.



S. E. MARTZ. ANIISKIDDING DEVICE. APPLICATION FILED r:a.21.1915.

Patented July 11, 1916. 2 SHEETSSHEET I 5. Z 2 Mar m; nonms PEYERS o-ummwlsumcrum n c S. E. MARTZ. ANTISKIDDING DEVICE. APPLICATION H'LED FEB. 21. 19.15.

Patented July 11, 1916. r

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WW I Q SILAS E. MARTZ, OF PLYMOUTH, PENNSYLVANIA.

ANTISKIDDING DEVICE.

Specification of Letters Patent.

Patented July 11, 1916.

Application filed February 27, 1915. Serial No. 11,100. V

with the wheels of motor vehicles, and has as its primary object to provide an article of this character which will prove thoroughly efficient in use, and which may be readily connected to any conventional type of wheel without the necessity of structural change therein.

The invention has as a further object to provide an anti-skidding device employing a spur or road engaging member which will normally be resiliently urged radially of the wheel to engage the road and which will be adapted for movement radially of the wheel against the tension of said yieldable means under the weight of the load of the vehicle, to thus be brought into effectual engagement with the road.

The invention has as a further object to provide an improved form of bracket for the road engaging member which will be of simple construction and which will beadapted to efficiently support the road engaging member in operative position upon the wheel.

Other and incidental objects will appear as the description proceeds and in the drawings, wherein I have illustrated the preferred embodiment of my invention, and

wherein similar reference characters designate corresponding parts throughout the several views, Figure 1 is a fragmentary side elevation disclosing the use of my improved anti-skidding device upon a vehicle wheel of conventional construction, Fig. 2 is a transverse sectional view more particularly illustrating the mounting of the road engaging member, Fig. 8 is a fragmentary perspective view showing the device detached and particularly illustrating the construction of the supporting bracket for the road engaging member.

In the preferred embodiment of my invention, I employ a substantially U-shaped supporting bracket 10 having laterally directed side portions or arms 11 arranged substantially parallel to each other, the slde portions being joined by a connecting portion 12. As bestillustrated in Fig. 3 of the drawings, the bracket 10 is provided with a continuous channel, as shown at 13.

The supportingvbracket 10 is preferably formed from sheet metalalthough any other suitable material may be employed and is provided, at the free extremities of the, arms 13 with laterally directed and oppositely disposed flanges 14 integrally formed on the free edges of the side walls of the said arms, the said flanges of each arm extending in opposite directions and being arranged at substantially right angles to the side walls thereof. Formed in corresponding flanges of the arms 11 are pairs of alined openings 15 and 16 respectively.

Integrally formedon the inner terminals of the flanges 14 are laterally directed lugs 17 which extend inwardly between the arms and are arranged at substantially right angles to the flanges 14:.

Arranged to cooperate with the supporting bracket 10 is a substantially U-shaped road engaging member 18 which is preferably integrally formed of suitable metal and the laterally directed arms 19 of which pro vide spurs adapted to engage the road, the free extremities of said arms being preferablysharpened or pointed. The arms 19 are joined by a substantially straight connecting portion 20 which extends at substantially right angles to the arms.

The road engaging member 18 is adapted.

to embrace the felly 21 of a wheel conventionallyshown at 22 in the drawings, with the connecting portion 20 of the said member normally seating against the inner face of the felly as best shown in Fig. 2, and with the arms 19 extending radially of the wheel upon each side of the tire conventionally shown at 23. Preferably, the outer free ends of the arms 19 normally project a slightdistance beyond the periphery of the tire to effectually engage the road.

As best shown in Fig. 2 of the drawings, the supporting bracket 10 is also adapted to embrace the felly 21 with the flanges 14: seating against theopposite side edges of the felly and with the lugs 17 hearing over and seating upon the inner face thereof. The arms 11 are thus arranged to project inwardly and radially toward the hub of the wheel, as shown in Fig. 1 of the drawings and are adapted to slidably receive the arms 19 ot the road engaging member 18 within the channel 13, the road engaging member being thus mounted tor radial movement upon the wheel. Detachably connecting the supporting bracket 10 with the telly are bolts 24 or other suitable tastening devices, which are arranged to extend through the telly and through the pairs of alined openings 15 and 16, respectively.

The connecting portion 12 ot the supporting bracket 10 is provided, substantially midway its ends, with an internally screw threaded bore, which is surrounded by a boss 25, and adjustably mounted in said bore is a set screw 26. Bearing between the inner terminal ot the set screw 26 and the connecting portion 20 ot the road engaging member 19 is a bowed spring 27, the terminals 0t which are provided with oppositely disposed and laterally directed lugs 28 embracing the opposite side edges of the said connecting portion.

Upon reference to Fig. 2 ot the drawings, it will be seen that when the tire 23 is depressed under the weight ot a load, the road engaging member will be brought into ettectual engagement with the road and will tend to move radially ot the telly within the channels 13 ot the supporting bracket 10 against the tension of the spring 27. The spring 27 thus provides a yieldable cushioning element tor the road engaging member normally urging the said member radially ot the wheel to engage the road, the tension of the said spring being regulated through the medium ot the set screw 26.

It will thus be seen that I provide a very simple and eflicient construction tor the purpose set torth, and in use, one 0t my improved devices will be preferably arranged midway between adjacent spokes -ot the:

wheel as shown in Fig. 1 of the drawing.

Having thus described my invention, what I claim and desire to secure by Letters Patent is 1. A device of the character described i11- cluding a supporting bracket provided with spaced arms, laterally extending flanges tormed on said arms, stop lugs carried by said flanges, a road engaging member slid ably mounted upon said arms, the said mem ber and the bracket embracing a wheel telly with the member pro ecting radially upon opposite sides ot the telly and with said flanges seating against opposite edges ot the telly with the stop lugs engaging the inner tace ot the telly, means connecting said flanges to the telly, a spring carried by the member, and means adjustable upon the bracket and engaging said spring tor regulating the tension thereot.

2. The combination with a wheel telly, ot a supporting bracket provided with spaced arms embracing the telly, a laterally extending flange tormed on each 0t said arms and seating against the adjacent side edge ot the telly, a stop lug carried by each of said flanges and engaging the inner tace ot the telly, means connecting the said flanges with the telly, a road engaging member adapted to embrace the telly and slidably mounted upon said arms, the said member being arranged to project radially ot the telly, and yieldable means engaging said member tor normally urging it to position projected beyond the periphery ot a tire carried by the telly.

The combination with a wheel telly, ot a substantially U-shaped supporting bracket having spaced arms joined by a connecting portion, the arms embracing the telly and having channels tormed therein, laterally directed and oppositely disposed flanges tormed on the side walls 0t said arms at the tree extremities thereof and seating against opposite side edges ot the telly, laterally directed stop lugs tormed on the inner extremities ot said flanges and extending inwardly betwe n the arms, the said lugs seating against the inner tace ot the telly, bolts extending through said flanges and the telly and detachably connecting the bracket with the telly, a substantially U-shaped road engaging member having spaced arms joined by a connecting portion, the said arms being slidably mounted in said channels with the connecting portion normally resting against the inner tace ot the telly, a bowed spring mounted upon the connecting portion 0t said member, and a set screw adjustable upon the connecting portion of said bracket and engaging said spring.

t. The combination with a wheel telly, ot a supporting bracket having arms joined by a connecting portion and secured at their tree extremities to opposite side taces ot the telly to project laterally therefrom, a road engaging member slidably mounted upon the said arms and provided with arms interposed between the arms ot the supporting bracket and the side taces ot the telly, and yieldable means interposed between the connecting portion ot the said bracket and the road engaging member tor urging the member radially ot the telly.

In testimony whereot I aflix my signature in presence ot two witnesses.

SILAS E. MARTZ. [L.s.]

Witnesses:

JNo. D. MANGAN, l/VM. P. LARGHNEY.

Gopies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. 0. 

